Electric-lighting fixture



June 21' 7- G. A. BOOMER mmscwmc LIGHTING FIXTURE Filed July 19. 1926 i Patented June 21, 1927.

UNITED' STATES 1,633,309 PATENT OFFICE.-

GEOBGE A. BOOMER, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE PLUME & ATWGOD MFG. CO., OF WATERBURY, CONNECTICUT, A CORPORATION.

ELECTRIC-LIGHTING FIXTURE.

Application filed July 19,

1 is a plan view of my improved fixture; Y

Fig. 2 is a view thereof in side elevation; Fig. 3 is a view thereof in vertical central section on a larger scale; and

Fig. 4: is a View in side elevation, partly in section, of one of the modified forms which my improved fixture may assume.

My invention relates to improvement in electric lighting fixtures, the object being to provide simple and etilcient means for in-' stalling standard electric light socket-casings in shells, whether the same a re designed for ceiling or side-wall fixtures.

With these ends in View, my invention consists in a fixture characterized by a housing.- shell, a mounting-sleeve centrally installed therein, and adapted for the reception and seating ot a socket-casing, and ren'iovable means for locking the socket-casingupon a seat in the said sleeve.

My invention further consists in a fixture characterized as above and having certain details as will be hereinafter described and pointed out in the claim.

F or the illustration of my invention, I ave shown itas applied to a standard ceilcanopy 10 provided with a standard shade-holder 11. permanently attached to the said canopy by having its upper edge 12 turned inwardly, upwardly and outwardly over the inwardly-turned lip 13, forming the lower edge of the canopy. The joint thus formed produces an inwardly-extending annular ledge which serves for the installation centrally within the said canopy 10 of a mounting-sleeve 14, formed near its lower end with an annular stopshoulder 15 and an outwardly-turned, annular retainingtlange 16, whereby the sleeve is rigidly secured in place within the canopy in upstand ing position therein. Toward the upper end the sleeve it is formed with an outwardlyextending, annular bead, producing an internal seating-shoulder 17 adapted in diameter to form a seat for the lower edge 18 of the skirt 19 of the cap 20 of a Standard socket-casing having a metal shell 21.

Above the seating shoulder 17 aforesaid, the sleeve 14 is threaded for the application of a threadedlocking-ring 22 having, at its upper end, an inwardly-turned retainingflange 23 adapted in diameter to engage with I the canopy 10.

1926. Serial No. 123,357.

the upper edge 24 ot the said skirt 19, so that, when the threaded locking-ring 22 is screwed down upon the threaded upper end of the mounting-sleeve 14:, the upper and lower edges of the skirt 19 are fi 'mly gripped and held, whereby the socket-easing as a whole isfirmly positioned within the canopy 10, from which it is readily removed by simply removing the ring 22 from the open top or" the canopy 10.

The pull-chain 25 of the socket-casing is passed outward through a bushing in the canopy 10. For the accommodation of the pull-chain-hushing 26 in the socket-casing itself, the sleeve 14 is formed near its upper edge with a notch 27. i

In the modified construction shown by Fig. 4 the shade-holder 11 is omitted and the lower end of the sleeve lt clamped di rectly upon the inwardly-turned lip 13 of In this construction, the sleeve is termed with an annular inwardlyextending seating-shoulder 28, which en with the customary shoulder 29 ot the shell 21 ot the socket-casing, the shoulder 29 in this case being utilized, instead of the lower edge 18 of the skirt 19 ot the cap 20. l t will be obvious from the "foregoing that the supplemental mounting-sleeve 15 together with the loekingcollar or equiv alent locking-means, may be applied to a side-wall shell, as well as to a ceiling canopy. without departing from my invention. In either case, the shell or canopy terms a housing for the socket-casing. I claim:

An electric lighting linture having a housing-shell, a shade-holder secured thereto so specification.

GEORGE A. BOOMER. 

